Convenient-to-assemble copper strip bearing tool for copper strip annealing

Abstract

The utility model discloses a convenient assembly type copper strip bearing tool for copper strip annealing, which comprises an outer ring baffle plate and a central shaft coaxially arranged with the outer ring baffle plate, a plurality of straight reinforcing steel bars and a spiral reinforcing steel bar are arranged between the central shaft and the outer ring baffle plate, and the spiral reinforcing steel bar is arranged on the plurality of straight reinforcing steel bars. A positioning pin used for forming a copper strip winding area is arranged on the spiral steel bar, and the central shaft is hinged to the straight steel bar through a hinge seat; the outer ring baffle is provided with a positioning groove for the straight steel bar to be in sliding fit, the positioning groove comprises an inclined part with the cross section being far away from the center shaft on one side and close to the center shaft on the other side, and when the center shaft drives the straight steel bar to rotate, the straight steel bar slides on the inclined part to be matched with the center shaft to incline, so that the spiral steel bar is in a three-dimensional spiral shape. The problem that in the prior art, a copper strip annealing tool is not convenient for a tool worker to wind and assemble a copper strip, and the efficiency of a copper strip annealing procedure is affected is solved.

Description

Technical Field

[0001] This utility model relates to the field of metal processing technology, specifically to a convenient assembly type copper strip support tooling for copper strip annealing. Background Technology

[0002] During annealing, copper strip is typically wound onto a copper strip turntable. However, during high-temperature annealing, copper atoms on the surfaces of adjacent layers of copper strip diffuse into each other at high temperatures, making it very easy for the semi-finished copper strip to stick together. When rolling and uncoiling are performed later, the strip will tear at the sticking point, resulting in obvious pit defects on the surface of the copper strip. These defects cannot be eliminated in subsequent processes, directly affecting the quality of the copper strip and preventing its surface quality from meeting the product's standard requirements.

[0003] There are generally two methods to prevent tape adhesion: one is to spray an anti-sticking agent during the rolling and winding of the copper strip. However, since the temperature during annealing can reach up to 600°C, the anti-sticking agent layer will be damaged under the action of temperature and tension, and it will not be able to provide isolation and protection, resulting in tape adhesion on the surface of the copper strip. The other method is to reduce the tension during the annealing of the copper strip to prevent atomic diffusion. This is usually done by reducing the winding tension or adding a rewinding process. However, reducing the tension will cause the copper strip with large roll diameter requirements to be flipped in the middle process, and there will also be quality and safety hazards such as tape crossing and loosening during the unwinding process. The added rewinding process not only has the above problems, but also causes the copper strips to rub against each other, resulting in other surface quality defects. Based on this, the inventors have proposed an anti-tape tooling for copper strip annealing, see reference 1.

[0004] Reference 1: Chinese patent document with patent publication number CN219059071U.

[0005] Reference 1 discloses an anti-sticking tooling for copper strip annealing, including a spiral reinforcing bar and a copper strip winding area formed between a positioning pin at the intersection of the spiral reinforcing bar and the bottom straight reinforcing bar. This allows the copper strip to be clamped and fixed around the positioning pin in the copper strip winding area. The copper strip to be annealed will be spirally wound. During the winding process, adjacent turns of copper strip separate. Even in a high-temperature annealing environment, copper atoms on the surface of the copper strip will not diffuse with each other due to high temperature and then stick together. This eliminates the possibility of causing obvious and irremovable surface defects such as pits in subsequent processes, ensuring the quality of the copper strip during annealing and thus meeting the product standard requirements.

[0006] However, when the inventors used the anti-sticking tape tooling for copper strip annealing described in Reference 1, they found that it was difficult to wrap the copper strip around the positioning pins of the planar spiral steel bar support. In other words, the gaps between the adjacent positioning pins were often small, which interfered with the winding work performed by the operator's hand pulling the copper strip, and thus reduced the efficiency of the copper strip annealing process to a certain extent. Utility Model Content

[0007] The purpose of this invention is to solve the problem that the copper strip annealing fixtures in the prior art are not convenient for toolers to wind and assemble the copper strip, thus affecting the efficiency of the copper strip annealing process, and to provide a convenient assembly copper strip support fixture for copper strip annealing.

[0008] To address the shortcomings of the aforementioned technical problems, the present invention adopts the following technical solution: a convenient assembly type copper strip bearing fixture for copper strip annealing, comprising an outer ring baffle and a central shaft coaxially arranged with the outer ring baffle. A plurality of straight steel bars and a spiral steel bar are provided between the central shaft and the outer ring baffle. The spiral steel bar is arranged on the plurality of straight steel bars, and a positioning pin for forming a copper strip winding area is provided on the spiral steel bar. The central shaft and the straight steel bars are hinged through a hinge seat.

[0009] The outer ring baffle is provided with a positioning groove for sliding cooperation of the straight steel bar. The positioning groove includes an inclined part with a cross-section that is away from the central axis on one side and close to the central axis on the other side. When the central axis drives the straight steel bar to rotate, the straight steel bar slides on the inclined part to cooperate with the inclination of the central axis so that the spiral steel bar is in a three-dimensional spiral shape.

[0010] As a further optimization of the copper strip annealing fixture of this utility model, the inclined part connects the outer ring part and the inner ring part, and the distance of the outer ring part from the central axis is greater than the distance of the inner ring part from the central axis.

[0011] As a further optimization of the copper strip annealing fixture of this utility model, the positioning groove includes an outer ring portion connecting two inclined portions, the outer ring portion being located on the side of the inclined portions away from the central axis.

[0012] As a further optimization of the copper strip annealing fixture of this utility model, the inclined part is opened along the winding direction of the copper strip, and a smooth sliding layer is provided on the inner wall of the outer ring baffle.

[0013] As a further optimization of the copper strip annealing fixture of this utility model, rotating sleeves are provided on both sides of the vertical axis of the central shaft.

[0014] As a further optimization of the copper strip annealing fixture of this utility model, a smooth layer is provided at the connection between the straight steel bar and the positioning groove.

[0015] As a further optimization of the copper strip annealing fixture of this utility model: when the spiral steel bar is in a three-dimensional spiral shape, the height difference between two adjacent positioning pins is between one-half and three-quarters of the length of the positioning pin.

[0016] As a further optimization of the copper strip annealing fixture of this utility model, the distance between the positioning pin near the central shaft and the outer side of the central shaft is the thickness of one layer of copper strip.

[0017] As a further optimization of the copper strip annealing fixture of this utility model, the distance between the positioning pin fixed near the end of the outer ring baffle and the inner side of the outer ring baffle is the thickness of one layer of copper strip.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] This invention uses a central axis to hinge with multiple straight reinforcing bars. Positioning grooves on the outer baffle plate position the ends of the reinforcing bars away from the central axis. These positioning grooves drive the outer ends of the reinforcing bars towards the central axis as the central axis rotates with them, thus driving the central axis to vertically displace. This changes the horizontal spiral shape of the spiral reinforcing bars on the straight bars to a three-dimensional spiral shape. The positioning pins on the spiral reinforcing bars have height differences, reducing the impact on workers' hands when coiling and assembling copper strips due to small spacing between adjacent positioning pins. This facilitates faster coiling and assembly of the copper strip onto the tooling. Attached Figure Description

[0020] Figure 1 This is a front view structural diagram of the assembled state of Embodiment 1 of this utility model;

[0021] Figure 2 This is a front view of the annealed state of Embodiment 1 of this utility model;

[0022] Figure 3 This is a partial cross-sectional structural diagram of the annealed state in Embodiment 1 of this utility model;

[0023] Figure 4 This is a partial cross-sectional structural diagram of the assembled state of Embodiment 1 of this utility model;

[0024] Figure 5 This is a partial cross-sectional structural diagram of the annealed state in Embodiment 2 of this utility model;

[0025] Figure 6 This is a partial cross-sectional structural diagram of the assembled state of Embodiment 2 of this utility model;

[0026] Markings in the diagram: 1. Outer ring baffle; 2. Positioning groove; 201. Outer ring; 202. Inclined part; 203. Inner ring; 3. Straight steel bar; 4. Positioning pin; 5. Central shaft; 6. Spiral steel bar; 7. Copper strip winding area; 8. Rotating sleeve. Detailed Implementation

[0027] To better understand this utility model, the following embodiments further illustrate the content of this utility model, but the content of this utility model is not limited to the following embodiments.

[0028] Example 1

[0029] like Figure 2 As shown, a convenient assembly type copper strip support fixture for copper strip annealing, similar to the prior art, includes a central shaft 5 and an outer ring baffle 1 arranged concentrically. Multiple radially arranged straight steel bars 3 are provided between the central shaft 5 and the outer ring baffle 1. Spiral steel bars 6 are arranged around the multiple straight steel bars 3. Multiple positioning pins 4 are provided on the spiral steel bars 6, which are in the same direction and parallel to the central shaft 5. The multiple positioning pins 4 can be used to wind and fix the copper strip under the support of the straight steel bars 3 and the spiral steel bars 6, thus forming a copper strip winding area 7 for winding and fixing the copper strip.

[0030] like Figure 1-4 As shown, unlike existing technologies, the straight steel bar 3 is hinged to the central shaft 5, and a positioning groove 2 is provided at the connection between the straight steel bar 3 and the outer ring baffle 1. When copper strip assembly and winding are required, the three straight steel bars 3 can be rotated by rotating the central shaft 5. The three straight steel bars 3 will move towards the central shaft 5 under the support and guidance of the inclined part 202 included in the three corresponding positioning grooves 2. At the same time, the force of the worker lifting the central shaft 5 will overcome the elasticity of the spiral steel bar 6 and cause the central shaft 5 to move upward. Through the relative locking of the positioning groove 2 and the straight steel bar 3, the spiral steel bar 6 will be in a stable three-dimensional spiral shape. Then, the copper strip winding area 7 formed by multiple positioning pins 4 will be in a three-dimensional shape, that is, multiple positioning pins 4 will be staggered in height position to reduce the degree to which the small distance between two adjacent positioning pins 4 affects the worker's hand winding of the copper strip. Then, it is convenient for the worker to carry out the copper strip winding work more efficiently. After winding, the central shaft 5 is rotated in the opposite direction to reset. Then, the tooling and copper strip can be placed in the annealing furnace for annealing using the central shaft 5.

[0031] Rotating sleeves 8 are fixed on both sides of the central shaft 5 in the vertical direction. Both rotating sleeves 8 are cylindrical with hexagonal outer walls, so that workers can rotate the central shaft 5 with a wrench to adjust the state of the three straight steel bars 6, that is, adjust the spiral steel bars 6 to a horizontal or three-dimensional state.

[0032] The positioning groove 2 includes an outer ring portion 201 and an inner ring portion 203 formed on the outer ring baffle 1. The distance between the outer ring portion 201 and the central axis 5 is greater than that between the inner ring portion 203 and the inner ring portion 203 and the outer ring portion 201 are connected by an inclined portion 202 formed on the outer ring portion 201. Thus, when the central axis 5 drives the corresponding straight steel bar 3 to rotate, the straight steel bar 3 changes from the inner ring portion 203 to the outer ring portion 201, that is, the straight steel bar 3 overcomes the upward displacement of the central axis 5 driven by the spiral steel bar 6, so that the spiral steel bar 6 is in a three-dimensional spiral shape. The outer ring 201 is C-shaped, which allows the outer ring 201 to relatively stably position the straight steel bar 3 in a horizontal state, that is, to make the spiral steel bar 6 in a horizontal spiral shape. The inner ring 203 and the inclined part 202 are both oblique rectangles radiating outward from the central axis 5. When the straight steel bar 3 rotates, the inner ring 203 and the inclined part 202 can drive the straight steel bar 3 to move the central axis 5 upward, so that the spiral steel bar 6 is in a three-dimensional spiral shape. At the same time, the edge of the inner ring 203 will press against the straight steel bar 3 to lock the straight steel bar 3 relatively, thereby making the spiral steel bar 6 stably maintain a three-dimensional spiral shape.

[0033] A smooth layer is sleeved at the connection between the straight steel bar 3 and the positioning groove 2. The smooth layer can reduce the sliding friction of the straight steel bar 3 sliding in the positioning groove 2, thereby reducing the force required by the operator to adjust the position of the central axis 5.

[0034] The positioning groove 2 is for the rotation direction of the straight reinforcing bar 3, that is, the length direction of the positioning groove 2 is the same as the direction of the spiral coil assembly of the copper strip. Therefore, when the straight reinforcing bar 3 resets and rotates to drive the spiral reinforcing bar 6 to reset, the copper strip clamped between the outer ring positioning pin 4 and the outer ring baffle 1 slides in its own winding direction. Specifically, the inner wall of the outer ring baffle 1 is provided with a sliding layer with a smooth surface, thereby reducing the damage that may occur when the copper strip slides on the outer ring baffle 1. Subsequently, the coiled copper strip can be tightened to a certain extent to overcome the change in the length of the coiled copper strip during the process of the three-dimensional coiled copper strip changing to the horizontal state. At the same time, it can also facilitate the removal and use of the copper strip by the workers later. The distance between the positioning pin 4, which is close to the outer ring baffle 1 and located at the corresponding end of the spiral reinforcing bar 6, and the inner wall of the outer ring baffle 1 is equal to the thickness of one layer of copper strip. This, in conjunction with the direction of the positioning groove 2, helps to position the copper strip or assist in the removal of the copper strip. The positioning pin 4, located near the central axis 5 and at the end of the spiral steel bar 6, is spaced from the outer side of the central axis 5 by the thickness of a copper strip. As the spiral steel bar 6 gradually extends, the distance between the central axis 5 and the corresponding spiral steel bar 6 gradually increases, which makes it easier for workers to position the end of the copper strip near the central axis 5. This adapts to the changes in the length of the coiled copper strip during the process of the three-dimensional coiled copper strip changing in the horizontal state.

[0035] When the spiral steel bar 6 is in a three-dimensional spiral shape, the height difference between the two locating pins 4 at adjacent heights is three-sixths of the height of the locating pin 4. This reduces the impact on workers winding the copper strip due to the small distance between the two adjacent locating pins 4, and allows the copper strip to be clamped and fixed by the two adjacent locating pins 4.

[0036] Example 2

[0037] like Figure 5 and Figure 6 As shown, this embodiment has the same basic structure as embodiment 1. The difference from embodiment 1 is that the positioning groove 2 includes two inclined parts 202 and an outer ring part 201 connecting the two inclined parts 202. The outer ring part 201 is located on the side of the inclined part 202 away from the central axis 5. Specifically, the positioning groove 2 is trumpet-shaped, which allows the operator to rotate the central axis 5 in two directions by rotating the sleeve 8. Then, the operator can rotate the straight steel bar 3 to reset in the corresponding direction according to the specific situation, thereby causing the copper strip clamped between the outer ring positioning pin 4 and the outer ring baffle 1 to slide in its own winding direction, thereby tightening the coiled copper strip to a certain extent, so as to overcome the change in the length of the coiled copper strip during the process of the three-dimensional coiled copper strip changing to the horizontal state.

[0038] The specific embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above, and those skilled in the art can make various modifications or variations within the scope of the claims, which do not affect the substantive content of this utility model.

Claims

1. A convenient assembly type copper strip support fixture for copper strip annealing, comprising an outer ring baffle (1) and a central shaft (5) coaxially arranged with the outer ring baffle (1), wherein a plurality of straight steel bars (3) and a spiral steel bar (6) are provided between the central shaft (5) and the outer ring baffle (1), the spiral steel bar (6) is provided on the plurality of straight steel bars (3), and the spiral steel bar (6) is provided with a positioning pin (4) for forming a copper strip winding area (7), characterized in that: The central shaft (5) is hinged to the straight steel bar (3) via a hinge seat; The outer ring baffle (1) is provided with a positioning groove (2) for the straight steel bar (3) to slide and engage. The positioning groove (2) includes an inclined part (202) with a cross-section that is far from the central axis (5) on one side and close to the central axis (5) on the other side. When the central axis (5) drives the straight steel bar (3) to rotate, the straight steel bar (3) slides on the inclined part (202) to engage with the central axis (5) to tilt, so that the spiral steel bar (6) is in a three-dimensional spiral shape.

2. The copper strip annealing fixture for copper strip as described in claim 1, characterized in that: The inclined portion (202) connects the outer ring portion (201) and the inner ring portion (203), and the distance of the outer ring portion (201) from the central axis (5) is greater than the distance of the inner ring portion (203) from the central axis (5).

3. The copper strip annealing fixture for copper strip as described in claim 1, characterized in that: The positioning groove (2) includes an outer ring (201) connecting two inclined portions (202), and the outer ring (201) is located on the side of the inclined portion (202) away from the central axis (5).

4. The convenient assembly type copper strip bearing fixture for copper strip annealing as described in claim 1, characterized in that: The inclined portion (202) is opened along the coiling direction of the copper strip, and the inner wall of the outer ring baffle (1) is provided with a smooth sliding layer.

5. The portable copper strip bearing fixture for copper strip annealing as described in claim 1, characterized in that: Rotating sleeves (8) are provided on both vertical sides of the central shaft (5).

6. The portable copper strip bearing fixture for copper strip annealing as described in claim 1, characterized in that: A smooth layer is provided at the connection between the straight steel bar (3) and the positioning groove (2).

7. The portable copper strip bearing fixture for copper strip annealing as described in claim 1, characterized in that: When the spiral steel bar (6) is in a three-dimensional spiral shape, the height difference between two adjacent positioning pins (4) is between one-half and three-quarters of the length of the positioning pin (4).

8. The copper strip annealing fixture for copper strip as described in claim 1, characterized in that: The distance between the positioning pin (4) near the central shaft (5) and the outer side of the central shaft (5) is the thickness of a copper strip.

9. The copper strip annealing fixture for copper strip as described in claim 1, characterized in that: The distance between the positioning pin (4) fixed near the end of the outer ring baffle (1) and the inner side of the outer ring baffle (1) is the thickness of a copper strip.

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